http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Giáo trình tự học lập trình Visual Basic 6: Xem - Thực hành - ứng dụng
Đặng Xuân Hường, Nguyễn Tiến, Nguyễn Văn Hoài, Trương Ngọc Vân
basic ( computer programs ),internet( computer network ),programming ( electronic computes )